Plant Data Sheet
Picture:
http://www.botanik.uni-bonn.de/conifers/pi/ts/mertensiana.htm
Species
Mountain Hemlock, Tsuga mertensiana
Range
From
Climate, elevation
Sub Alpine.
Local occurrence
Along
the Crest of the Cascades.
Habitat preferences
Loose
coarse textured, well-drained acidic soils.
Plant
strategy type/successional stage.
Tolerates
sites with long lasting snow pack. Not drought/shade
tolerant. Minor climax
species.
Associated species
Abies amabilis, Chaecyparis nootkatensis, Vaccinium membranaceum, Abies Lasiocarpa, Picea engelmanii, Pinus contorta
May be collected as:
Seed
Collection restrictions or
guidelines
Seeds shed in Late
November and December.
Seed germination
Cold stratification of mature seeds shortens incubation time and may substantially increase germination.
Seed life
Seed viability
ranges from 36-76% over a 2 yr period.
Recommended seed storage
conditions
In a cooler (cold stratification).
Propagation recommendations
Easily propagated by
seeds and cuttings
Soil or medium requirements
Snow, mineral soil
Installation form
Seeds
Recommended planting density
2-3 m apart
Care requirements after
installed
Water
weekly, then no water after 2 months.
Normal rate of growth or
spread; lifespan
Very slow
growing. 7-28m tall at
100 yrs. Life span 800+ yrs.
Sources cited
http://www.fs.fed.us/database/feis/plants/tree/tsumer/
http://nativeplantenetwork.org
MacKinnon,
Andy; Pojar, Jim. Plants of the
Silvics of NA,
VI Conifers. Burns, Russel
M. & Honkala, Barbara H. Technical Coordinators.
FS. USDA.WADC. Dec 1990.
Data compiled by
Christer Lundstrom –